Lo que los fósiles nos enseñan sobre la Tierra (Investigating Fossils)

For thousands of years, militaries around the world were limited to male soldiers. However, throughout history, brave women have stepped out of the background and onto the battlefield. This biographical text covers the important women who’ve broken ground in the military. Famous historical figures such as Joan of Arc, Clara Barton, and Florence Nightingale are covered in depth, while the stories of modern-day heroes are presented to show how women are still affecting change on the front lines. A comprehensive timeline, fact boxes, and historical and modern images complete this...

Sexto libro de historietas donde se reflejan con mucho humor las situaciones que todos sufrimos y disfrutamos cuando tenemos un hermano. Descubriremos que a Nacho y a Tobi les encantó ir a la plaza con su papá. Sobre todo, porque de ese paseo regresaron con una. ¡mascota! ¿ Quién le elegiría el nombre? ¿Quién se ocupará de darle de comer?

With a direct tone and based on testimony, questions, real emotions, and inquiries, this book advises adolescent young men on several different topics: muscles, sports, women, acne, humor, the Internet, music, jokes, money, risks, and protection, among others. A book filled with information, practical ideas, modern tips, and illustrations, it has the added benefit of being endorsed by professionals specializing in each of the subjects it covers. Con un tono directo y sin prejuicio, este libro surge de testimonios, preguntas, emociones e inquietudes reales, intentando orientar y dar respuesta...

Students will develop their math skills while engaged in reading about Yosemite National Park. This book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach geometry concepts like calculating perimeter and area. Text features include a glossary, an index, captions, and a table of contents to increase students’ vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, math charts and diagrams, and sidebars provide many opportunities for students to practice their developing math skills, and apply what...

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.